GM Service Manual Online
For 1990-2009 cars only

Courtesy Lamps Inoperative with Unlock of Any Door or Liftgate for Cadillac Eldorado 2000

Courtesy Lamps Inoperative with Unlock of Any Door or Liftgate Left Door

Step

Action

Value(s)

Yes

No

1

Did you perform the Lighting Systems Diagnostic System Check?

--

Go to Step 2

Go to Diagnostic System Check - Lighting Systems

2

  1. Disconnect the LH door lock cylinder switch connector.
  2. Connect a fused jumper between the LH door lock cylinder switch connector terminal B (LT GRN) and terminal A (BLK/WHT).

Do the courtesy lamps light?

--

Go to Step 3

Go to Step 4

3

Replace the LH door lock cylinder switch. Refer to Door Lock Cylinder Replacement in Doors.

Is the door lock cylinder switch replacement complete?

--

Go to Step 9

--

4

Connect a fused jumper from the LH door lock cylinder switch connector terminal B (LT GRN) to ground.

Do the courtesy lamps light?

--

Go to Step 5

Go to Step 6

5

Repair the open in CKT 51 (BLK/WHT) between S201 and lock cylinder connector. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Step 9

--

6

Inspect CKT 262 (LT GRN) for an open. Refer to Testing for Continuity in Wiring Systems.

Is CKT 262 OK?

--

Go to Step 7

Go to Step 8

7

Replace the body control module (PZM). Refer to Body Control Module Replacement in Body Control System.

Is the body control module replacement complete?

--

Go to Step 9

--

8

Repair the suspect wiring. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Step 9

--

9

Operate the system in order to verify the repair. Did you correct the condition?

--

System OK.

Go to Step 2

Courtesy Lamps Inoperative with Unlock of Any Door or Liftgate Right Door

Step

Action

Value(s)

Yes

No

1

Did you perform the Lighting Systems Diagnostic System Check?

--

Go to Step 2

Go to Diagnostic System Check - Lighting Systems

2

  1. Disconnect the RH door lock cylinder switch connector.
  2. Connect a fused jumper between the RH door lock cylinder switch connector terminal A (LT GRN) and terminal B (BLK/WHT).

Do the courtesy lamps light?

--

Go to Step 3

Go to Step 4

3

Replace the RH door lock cylinder switch. Refer to Door Lock Cylinder Replacement in Doors.

Is the door lock cylinder switch replacement complete?

--

Go to Step 9

--

4

Connect a fused jumper from the RH door lock cylinder switch connector terminal A (LT GRN) to ground.

Do the courtesy lamps light?

--

Go to Step 5

Go to Step 6

5

Repair the open in CKT 151 (BLK/WHT) between S323 and lock cylinder connector. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Step 9

--

6

Inspect CKT 265 (LT GRN) for an open. Refer to Testing for Continuity in Wiring Systems.

Is CKT 265 OK?

--

Go to Step 7

Go to Step 8

7

Replace the body control module (PZM). Refer to Body Control Module Replacement in Body Control System.

Is the body control module replacement complete?

--

Go to Step 9

--

8

Repair the suspect wiring. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Step 9

--

9

Operate the system in order to verify the repair. Did you correct the condition?

--

System OK.

Go to Step 2